#!/bin/bash
# program:
#	用户选择
#
#
#

read -p "Please input (Y/N): " yn
[ "$yn" == "Y" -o "$yn" == "y" ] && echo "Ok, continue" && exit 0
[ "$yn" == "N" -o "$yn" == "n" ] && echo "Oh, interrupt!" && exit 0

echo "I don't kown what your choice is " && exit 0  

